Portable water purification unit



FIG. 1 is a top and front perspective view of a portable water purification unit showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a left side elevational view thereof; and

FIG. 8 is a top and front perspective view thereof, with the broken-line showing of the faucet being for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a portable water purification unit, as shown and described. 